Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Secansky, M."'
Using the description of the subprocess $\gamma\gamma^*\to S(P)$ in terms of local Nambu-Jona-Lasinio model we calculate the cross sections of photoproduction of scalar and pseudoscalar mesons in high energy photon-lepton collisions processes. The de
Externí odkaz:
http://arxiv.org/abs/0902.1384
Publikováno v:
Phys.Part.Nucl.Lett.6:365-367,2009
We have noted that the electron spectrum of muon decay in the leading logarithmic approximation calculated in two lowest orders of the perturbation theory in the paper of Berman (1958), can be reproduced by the parton language. This fact permits one
Externí odkaz:
http://arxiv.org/abs/0811.4242
Publikováno v:
Nucl.Phys.Proc.Suppl.181-182:210-214,2008
Radiative decays of pseudoscalar and vector mesons are calculated in the framework of the chiral Nambu-Jona-Lasinio (NJL) model. We use the amplitude for triangle quark loops of anomalous type. In evaluating these loop integrals we use two methods. I
Externí odkaz:
http://arxiv.org/abs/0804.3714
Publikováno v:
Eur.Phys.J.C55:193-198,2008
We reconsider QED radiative corrections (RC) to the $\pi^{0}\to e^{+}e^{-}$ decay width. One kind of RC investigated earlier has a renormalization group origin and can be associated with the final state interaction of electron and positron. It determ
Externí odkaz:
http://arxiv.org/abs/0801.2028
Publikováno v:
JETP Lett.87:73-77,2008
Born differential cross sections and the lowest-order radiative correction to them are obtained in the kinematics of large-angle final photons emission in high-energy electron-positron annihilation processes. Taking into account possible emission of
Externí odkaz:
http://arxiv.org/abs/0801.1592
Publikováno v:
Phys.Rev.D77:054008,2008
The decay \phi -> f_0(980) \gamma and process e^+e^- -> \phi f_0(980) are considered within the local Nambu-Jona-Lasinio model. In the amplitudes of these processes contributions of s-quark and kaon loops are taken into account. The kaon loop gives a
Externí odkaz:
http://arxiv.org/abs/0712.0304
Publikováno v:
Phys.Part.Nucl.Lett.5:76-84,2008
We analyze the possibility of experimental investigation of new low-energy relations between the values of resonance masses in the meson form factors and the differential rate of radiative kaon decay $K^+\to \pi^+ e^+e^-(\mu^+\mu^- )$ at the current
Externí odkaz:
http://arxiv.org/abs/hep-ph/0611175
Instantaneous interactions in Standard Model are derived by the resolution of the Gauss constraints in inertial reference frames defined as irreducible representations of the Poincare group. The relativistic covariant and gauge-invariant S-matrix is
Externí odkaz:
http://arxiv.org/abs/hep-ph/0607211
The hadrodynamics of the instantaneous weak interactions (IWI) in Standard Model is considered supposing the resonance nature of the chiral hadronization of quark currents in QCD. Exploiting this supposition and QCD symmetries the IWI mechanism of en
Externí odkaz:
http://arxiv.org/abs/hep-ph/0606005
Publikováno v:
Phys.Rev.D73:125016,2006
Relations between differential cross section for inelastic scattering of electrons on hadrons and hadron form factors (sum rules) are derived on the basis of analytical properties of heavy photon forward Compton scattering on hadrons. Sum rules relat
Externí odkaz:
http://arxiv.org/abs/hep-ph/0601201